研究目的
Investigating the development of lead-free, aqua stable A3Bi2I9 perovskites for optoelectronic applications, focusing on crystal growth, stability in water, and photoluminescence properties.
研究成果
The study successfully demonstrates the formation of large-sized single crystals and nanocrystals of A3Bi2I9 perovskites with remarkable stability in water and high photoluminescence quantum yields, indicating promising applications in photonic devices.
研究不足
The study focuses on iodide-based Bi-perovskites, and the stability and photoluminescence properties may vary with other halides or compositions.
1：Experimental Design and Method Selection
Temperature lowering method for single crystal growth and dispersion in solvents for nanocrystals preparation.
2：Sample Selection and Data Sources
Single crystals and nanocrystals of A3Bi2I9 perovskites [A = CH3NH3+, Cs+ and (Rb0.05Cs2.95)+].
3：List of Experimental Equipment and Materials
Bruker Smart APEX II diffractometer, Shimadzu UV-3600 spectrophotometer, Fluorolog-3 spectrofluorometer, HR-TEM TALOS F200X microscopy.
4：Experimental Procedures and Operational Workflow
Crystal growth via temperature lowering, nanocrystals preparation by dispersion in solvents, stability tests by immersion in water, photoluminescence and absorption measurements.
5：Data Analysis Methods
X-ray diffraction for structural analysis, absorption and PL spectra for electronic properties, TCSPC for lifetime measurements.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
